"Power" LED flashes

As soon as you connect your FRITZ!Box to your DSL line, the FRITZ!Box establishes a connection to your DSL provider's exchange. This can take up to 10 minutes. During this time, the "Power" LED on the FRITZ!Box flashes. As soon as the DSL connection has been established, it stays lit.

This guide shows you how to resolve the following issues:

The FRITZ!Box's "Power" LED flashes continuously.

The FRITZ!Box does not establish a DSL connection.

The following error message is displayed in the event log of the FRITZ!Box:

"DSL not responding (no DSL synchronization)"

Important:Some of the settings described here are only displayed if the advanced view is enabled in the user interface. The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS.

Simply proceed as described below. After each measure, check whether the issue persists.

2 Checking the event log of the FRITZ!Box

Check whether the error message "DSL not responding" is constantly displayed, or whether the FRITZ!Box establishes an intermittent DSL connection and then displays the error message when the connection drops.

If the error message "DSL not responding" is constantly displayed:

Proceed with the following section.

If the error message "DSL not responding" is frequently (for example several times a day) displayed:

7 Installing the latest FRITZ!OS for the FRITZ!Box

8 Checking the DSL line

There may be a problem with the DSL line. Since it may take a while for your DSL provider to check your line, you may be charged for the service, and our experience shows that there is often a problem with DSL lines even if they have been checked by your provider, proceed as follows:

Test whether a different DSL modem works on your DSL line,

or:

Test whether the FRITZ!Box can establish a DSL connection on a different DSL line (for example at your neighbor's).

Note:Only connect the FRITZ!Box to the DSL line and the power supply. If after 10 minutes the "Power" LED still is not lit, then a DSL connection could not be established.

If a different modem also does not work on your DSL line, or if your FRITZ!Box can establish a DSL connection on a different line, then there is a problem with your DSL line: